Hi comrade,
I am older and sometimes, well maybe, a lot of times, I have the same challenge. Did I put my eye drops in yet? And I take them in the morning and at night. I have had to make up a chart, which I check off when I put them in. Make sure there is a pencil or pen handy, so that can't be the excuse of why it isn't being recorded. This has helped me and may it help your mom.
Lord, I pray in Jesus' name for ###'s mom. Thank You Lord. Amen